METTL3 and breast cancer: To determine whether ADAR1 overexpression enhances ARHGAP5 expression through METTL3, we knocked down METTL3 and overexpressed ADAR1-p150 protein and knocked down ADAR1 and overexpressed METTL3 in breast cancer cell lines to detect ARHGAP5 expression level by qRT-PCR.